Okay, I have the thermal windows in the loft and I don't see it as a problem. Open the vent above the bed... just a bit, like less than 1/2". Turn the Max fan on to exhaust on low and it will pull air down the loft vent. You'll get plenty of air... it's a huge vent. That's what I did this past weekend and it was POURING rain. So, I know it works.
2014 Escape 5.0TA